Ventilating fan



FIG. 1 is a front perspective view of a ventilating fan of the presentinvention;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a first side view thereof;

FIG. 5 is a second side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken line showing of a ventilating fan is included for the purposeof illustrating environment and forms no part of the claimed design.

The ornamental design for a ventilating fan, as shown and described.